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Acquisition - Additional Information (Details) - Rodin Therapeutics, Inc.	Nov. 18, 2019 USD ($)
Business Acquisition [Line Items]
Business acquisition, date of acquisition agreement	Nov. 18, 2019
Business acquisition, date of acquisition completed	Nov. 25, 2019
Upfront cash payment	$ 98,100,000
Research and development expense	86,594,000
Milestones future payments	850,000,000.0
IPR&D
Business Acquisition [Line Items]
Payment attributed to acquire IPR&D	98,100,000
Maximum
Business Acquisition [Line Items]
Upfront cash future payments	850,000,000.0
Achievement of Specified Clinical Milestones | Maximum
Business Acquisition [Line Items]
Upfront cash future payments	225,000,000.0
Achievement of Regulatory Milestones | Maximum
Business Acquisition [Line Items]
Upfront cash future payments	300,000,000.0
Attainment of Sales Thresholds | Maximum
Business Acquisition [Line Items]
Upfront cash future payments	$ 325,000,000.0

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-Name Accounting Standards Codification
-Topic 805
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